Molecular Transformator - Short #217

HVAC School - For Techs, By Techs

Bryan Orr

Training, Careers, Airconditioning, Self-improvement, Hvac, Business, Education, Refrigeration, Heating, Ac, Apprenticeship

4.8 • 985 Ratings

🗓️ 5 November 2024

⏱️ 9 minutes

🔗️ Recording | iTunes | RSS

🧾️ Download transcript

Summary

In this short podcast episode, Bryan talks about the CPS Molecular Transformator and what it does.

The Molecular Transformator is a version of a tube-in-shell heat exchanger, which is a method of exchanging heat from one fluid medium to another fluid medium. Tubes containing a fluid pass through a shell containing water or glycol, and there is a heat exchange between that secondary fluid and the fluid being circulated in the tubes. In a Molecular Transformator, the fluid being circulated is recovered refrigerant, and the secondary fluid is water (in a bucket), which absorbs heat from the refrigerant and cools it down to make sure that the refrigerant enters the recovery tank as a liquid.

Refrigerant recovery machines have condensers inside of them, but they are quite small and don't hold a lot of refrigerant by design; many recovery machines use microchannel coils. A lot of the time, the refrigerant leaving a recovery machine is a liquid-vapor mix and too high-temperature; a lot of people run a hose over the tank or put it in a bucket of ice. The "Molecular Transformator" tries to settle the vapor molecules down into a liquid; it transforms the vapor molecules using the same mechanism as a tube-in-shell heat exchanger.

The main issue is that there will be leftover refrigerant in the Molecular Transformator after recovery. However, you can mitigate this problem with ball valves and proper purging. Do so responsibly to avoid venting refrigerant.

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Transcript

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0:00.0	Hello, me, amigo. This is the HVAC School podcasto. And I'm Brian. This is the podcast that helps you remember some things you might have forgotten along the way, as well as remember some things you forgot to know in the first place. This is a short episode. And we're going to talk about molecular transformator, which is actually, I think it's
0:22.4	probably a trademarked copywritten name, all rights reserved to CPS.
0:28.1	We're going to talk about the basics of what it does and maybe why it's called that.
0:32.0	But before I do that, we're going to thank our great sponsors.
0:35.0	Refrigeration Technologies at refrigetec.com.
0:38.7	White Rogers and Copeland, and especially their connected controls, HVCRSchool.com
0:46.3	slash connect controls to find out more about Copeland and White Rogers.
0:51.0	Fieldpiece at fieldpiece.com.
0:54.0	Carrier and Carrier.com? The ESCO Institute, with over 200
0:58.2	HVACR training solutions, courses, webinars, and simulators. Find out more by going to escogroup.org.
1:06.9	All right, so first up, this came from a suggestion. I don't even remember who suggested, but somebody suggested that I talk about this.
1:13.7	And molecular transformator is, like I already mentioned, I think it's a brand name that CPS uses.
1:19.9	And essentially what it is, it's a version of a tube and shell heat exchanger.
1:25.5	And you may say, what's a tube and shell heat exchanger?
1:27.9	Tube and shell heat exchanger is just a method of exchanging heat from one fluid medium to another
1:32.8	fluid medium where there's tubes passing through and then it's in a shell of usually
1:37.4	water or glycol or something like that that then exchanges the heat out of or into, I should
1:42.6	say, the medium being circulated through the tubes.
1:46.2	In this case, for the molecular transformer, the fluid being moved through the tubes is
1:52.2	refrigerant that just came out of a recovery machine. And so what is it doing? Well, it's dropping
1:57.5	the temperature and it's using a bucket of water. So you take the
2:01.4	molecular transformer, you dunk it in a bucket of water. And so that bucket of water becomes the shell.
	...

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